Access Keys after adding NSDictionary to NSMutableArray. iOS - ios

Question

I have a NSDictionary that I add to a mutable array but when I try add the array to populate a uitableview I get an error.
NSMutableArray *array = [[NSMutableArray alloc] init];
for (id element in self.categoriesMutableNameArray) {
[array addObject:#"No"];
}
self.categoryDict = #{ #"title" : self.categoriesMutableNameArray, #"selected" : array};
self.categoryArr = [[NSMutableArray alloc] init];
self.categoryMutableDict = [NSMutableDictionary dictionaryWithDictionary:self.categoryDict];
[self.categoryArr addObject:self.categoryDict];
and the following categoryArr is printed like this:
2014-02-27 15:09:07.397 App[7982:70b] (
{
selected = (
No,
No,
No,
No,
No,
No,
No,
No,
No,
No,
No,
No,
No,
No
);
title = (
"Fashion - Women",
"Fashion - Men",
Kids,
"Accessories - Women",
"Accessories - Men",
"Styling / Hair",
Inspiration,
"Decoration / Architecture",
"Great Places",
"Art / Design",
"Music / Movie / Books",
"Food / Drink",
"Gadgets / Tech",
Rides
);
}
)
The trouble I am having is in the uitableview cellforrowatindexpath method I try and add the title key for the categoryArr to populate the uitableview and I get the following error on this line:
UILabel *categoryLabel = (UILabel *)[cell viewWithTag:111];
categoryLabel.text = [NSString stringWithFormat:#"%#",[[self.categoryArr objectAtIndex:indexPath.row] objectForKey:#"title"];
And the error log:
2014-02-27 15:24:33.804 App[8153:70b] -[__NSArrayM length]: unrecognized selector sent to instance 0xa9bc3a0
2014-02-27 15:24:33.807 App[8153:70b] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSArrayM length]: unrecognized selector sent to instance 0xa9bc3a0'
*** First throw call stack:
(
0 CoreFoundation 0x020c75e4 __exceptionPreprocess + 180
1 libobjc.A.dylib 0x01e4a8b6 objc_exception_throw + 44
2 CoreFoundation 0x02164903 -[NSObject(NSObject) doesNotRecognizeSelector:] + 275
3 CoreFoundation 0x020b790b ___forwarding___ + 1019
4 CoreFoundation 0x020b74ee _CF_forwarding_prep_0 + 14
5 Foundation 0x006e18ed -[NSConcreteMutableAttributedString replaceCharactersInRange:withString:] + 39
6 Foundation 0x006e255a -[NSConcreteMutableAttributedString initWithString:attributes:] + 293
7 UIKit 0x01172bc6 -[UILabel _setText:] + 97
8 UIKit 0x01172d84 -[UILabel setText:] + 40
9 App 0x00047ebd -[PiccImageCategoriesViewController tableView:cellForRowAtIndexPath:] + 1533
10 UIKit 0x010b461f -[UITableView _createPreparedCellForGlobalRow:withIndexPath:] + 412
11 UIKit 0x010b46f3 -[UITableView _createPreparedCellForGlobalRow:] + 69
12 UIKit 0x01098774 -[UITableView _updateVisibleCellsNow:] + 2378
13 UIKit 0x010abe95 -[UITableView layoutSubviews] + 213
14 UIKit 0x01030267 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 355
15 libobjc.A.dylib 0x01e5c81f -[NSObject performSelector:withObject:] + 70
16 QuartzCore 0x00c8e2ea -[CALayer layoutSublayers] + 148
17 QuartzCore 0x00c820d4 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 380
18 QuartzCore 0x00c81f40 _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 26
19 QuartzCore 0x00be9ae6 _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 294
20 QuartzCore 0x00beae71 _ZN2CA11Transaction6commitEv + 393
21 QuartzCore 0x00beb544 _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 92
22 CoreFoundation 0x0208f4ce __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 30
23 CoreFoundation 0x0208f41f __CFRunLoopDoObservers + 399
24 CoreFoundation 0x0206d344 __CFRunLoopRun + 1076
25 CoreFoundation 0x0206cac3 CFRunLoopRunSpecific + 467
26 CoreFoundation 0x0206c8db CFRunLoopRunInMode + 123
27 GraphicsServices 0x027779e2 GSEventRunModal + 192
28 GraphicsServices 0x02777809 GSEventRun + 104
29 UIKit 0x00fc5d3b UIApplicationMain + 1225
30 App 0x0001406d main + 141
31 libdyld.dylib 0x02f4d70d start + 1
32 ??? 0x00000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
Thanks

Answer 1

The return of [[self.categoryArr objectAtIndex:indexPath.row] objectForKey:#"title"]; is a array of NSString, categoryLabel.text = [NSString stringWithFormat:#"%#", /*the return array*/]; this is the problem.
Maybe what you want is:
NSArray *categoryDetailArr = [[self.categoryArr objectAtIndex:indexPath.section] objectForKey:#"title"];
categoryLabel.text = [[categoryDetailArr objectAtIndex:indexPath.row];

Answer 2

Write this code
categoryLabel.text = [[[self.categoryArr objectAtIndex:0] objectForKey:#"title"]objectAtIndex:indexPath.row];
instead OF
categoryLabel.text = [NSString stringWithFormat:#"%#",[[self.categoryArr objectAtIndex:indexPath.row] objectForKey:#"title"];
And plz check that in UITableView dataSource methods i.e
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [categoryLabel objectAtIndex:0]valueForKey:#"selected"].count;
}
OR
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [categoryLabel objectAtIndex:0]valueForKey:#"title"].count;
}